/*
 * Licensed to The Apereo Foundation under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional
 * information regarding copyright ownership.
 *
 *
 * The Apereo Foundation licenses this file to you under the Educational
 * Community License, Version 2.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of the License
 * at:
 *
 *   http://opensource.org/licenses/ecl2.txt
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 *
 */
'use strict';

angular.module('adminNg.services')
.factory('RelativeDatesService', function () {

  var RelativeDatesService = function () {

    this.relativeToAbsoluteDate = function(relative, type, from) {
      var localeMoment = moment();
      localeMoment.locale(navigator.language);

      var absolute;
      if (from === true) {
        absolute = localeMoment.startOf(type);
      } else {
        absolute = localeMoment.endOf(type);
      }

      absolute = absolute.add(relative, type);

      return absolute.toDate();
    };

    this.relativeDateSpanToFilterValue = function(fromRelativeDate, toRelativeDate, type) {

      var fromAbsoluteDate = this.relativeToAbsoluteDate(fromRelativeDate, type, true);
      var toAbsoluteDate = this.relativeToAbsoluteDate(toRelativeDate, type, false);

      return fromAbsoluteDate.toISOString() + '/' + toAbsoluteDate.toISOString();
    };
  };

  return new RelativeDatesService();

});
